基于数字波形同步回放技术的负荷识别模组测试平台设计

Design of Load Identification Module Test Platform Based on Digital Waveform Synchronous Playback Technology

近年居民、工商业用户的非介入负荷识别技术和工程应用场景呈井喷式发展态势,而针对负荷辨识设备的检测技术研究却鲜有关注。针对智能物联电表的非介入负荷识别模组批量化测试场景进行测试平台的研究设计。首先介绍了基于COMTRADE文件的典型用电工况的数字描述方法,并针对多通道输出波形同步性难题,提出了基于同步激励控制方法的数字波形同步回放技术;然后重点进行了测试平台的设计,在整体框架设计基础之上,详细设计了下位机硬件测试单元和上位机测试软件的功能,并进行了完整的测试平台软件的控制流程设计;最后通过实验测试验证了该测试平台的性能,数字波形输出具有较高的稳定度,通道偏差小于(100±10)μs/p(包),数字波形的输出错包率小于0.01‰,保证了数据输出的稳定性,可加载多种模式的负荷数字波形满足多场景检测需求,极大地提高了负荷识别模组的检测效率。

Though non-intervention load identification technology and engineering application scenarios of residents,industrial and commercial users have shown a boosting trend in recent years,negligible research attention has been paid on test technology of load identification equipment.This paper studies and designs test platform for the batch test scenario of the non-intervention load identification module of the smart IOT electricity meter.Firstly,the digital description method of typical power consumption conditions based on COMTRADE file is introduced.Aiming at synchronization of multi-channel output waveform,a digital waveform synchronous playback technology based on synchronous excitation control method is proposed.Then the design of the test platform is emphasized.On the basis of the overall framework design,the functions of the lower computer hardware test unit and the upper computer test software are designed in detail,and the complete control flow of the test platform software is designed.Finally,the performance of the test platform is verified through experimental tests.The digital waveform output is highly stable,as the channel deviation is less than(100±10)μs/p(packets)and the output packet error rate of the digital waveform is lower than 0.01‰,which ensures stability of data output.The platform can deal with multiple modes of load digital waveform,which satisfies diversified detection scenarios and greatly improves test efficiency for load identification module.